CN108023794B - Equipment access control method and device - Google Patents
Equipment access control method and device Download PDFInfo
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- CN108023794B CN108023794B CN201711260016.6A CN201711260016A CN108023794B CN 108023794 B CN108023794 B CN 108023794B CN 201711260016 A CN201711260016 A CN 201711260016A CN 108023794 B CN108023794 B CN 108023794B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/70—Software maintenance or management
- G06F8/71—Version control; Configuration management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2642—Domotique, domestic, home control, automation, smart house
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention relates to the field of smart home. The purpose is to provide a device access control method and a device, wherein the control method comprises the following steps: firstly, a block chain node receives an equipment authorization query request sent by a control terminal device; then the block chain node determines the corresponding current authorization version number according to the equipment authorization query request; secondly, the block link node determines a corresponding device authorization transaction record according to the device authorization query request and the current authorization version number; if the equipment authorization transaction record is found, the block chain nodes judge whether the equipment authorization query request is matched with the equipment authorization transaction record, otherwise, the block chain nodes directly send response information of the equipment authorization query request to the control terminal device; and finally, the control end device judges whether to send control instruction information to corresponding equipment or not according to the received response information of the authorization query request. By adopting the method, the function of interconnection and intercommunication mutual control among all the Internet of things open platforms can be realized.
Description
Technical Field
The invention relates to the field of smart home, in particular to a device access control method and device.
Background
With the rise of the intelligent home and the internet of things technology, various intelligent home manufacturers and service providers have to establish an internet of things open platform by using their own advantageous resources, and attempt to introduce more service providers or equipment manufacturers to join in their own platforms, so as to realize interconnection, intercommunication and mutual control among equipment, applications and services. At present, various internet of things open platforms compete for singing, but interconnection and intercommunication between the internet of things open platforms can not be basically realized. For a device manufacturer, if an internet of things open platform of a service provider owning user resources is to be accessed, a corresponding SDK provided by the service provider needs to be embedded in own device. If the equipment manufacturer needs to access a plurality of internet of things open platforms, the workload of the equipment manufacturer will increase. For the smart home user, the devices in the home may come from different device manufacturers, and each device has access to different internet of things open platforms by different manufacturers. Therefore, complete interconnection and intercommunication among the intelligent home devices are impossible, users need to use different application control devices, and user experience is poor.
Disclosure of Invention
In view of this, the present invention provides a device access control method and apparatus, and the control method and apparatus implement a function of interconnection, intercommunication and mutual control between all internet of things open platforms.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a device access control method comprising the steps of:
the method comprises the following steps: a block chain link point in a block chain network receives an equipment authorization query request sent by a control end device;
step two: the block chain node determines a corresponding current authorization version number according to the equipment authorization query request;
step three: the block chain node determines a corresponding equipment authorization transaction record according to the equipment authorization query request and the current authorization version number;
step four: if the equipment authorization transaction record is found in the third step, continuing the fifth step, otherwise, skipping to the sixth step;
step five: the block chain node judges whether the equipment authorization query request is matched with the equipment authorization transaction record;
step six: the block chain node sends response information of the equipment authorization query request to the control terminal device;
step seven: and the control terminal device judges whether to send control instruction information to corresponding equipment or not according to the received response information of the authorization query request.
Preferably, the device authorization query request includes device identification information, user identification information, access time information, and control instruction information.
Preferably, the block chain node sends the device identification information and all historical authorization version numbers corresponding to the user identification information query to the device management end apparatus; or the block chain link point inquires all historical authorization version numbers, corresponding to the equipment identification information and the user identification information, stored by the block chain node according to the equipment identification information and the user identification information.
Preferably, the authorization version number is a numeric value or a string with ascending rules.
Preferably, the device authorization transaction record contains device identification information, user identification information, an authorization version number, an authorization validity period, and device authorization information; the device authorization information includes an authorization operation or an authorization operation list of the device corresponding to the device identification information.
Preferably, the response information includes device identification information, user identification information, access time information, control instruction information, and verification result identification information.
An equipment access device comprises a block chain network, wherein the block chain network is respectively interacted with at least two equipment management end devices and a control end device, the control end device is connected with an equipment input end, and the block chain network comprises at least three block chain nodes;
the single block chain link point comprises a first receiving module, a determining module, a first inquiring module, a judging module and a first sending module which are sequentially connected, and the first receiving module and the first sending module are respectively connected with the control end device.
Preferably, the determining module includes a second querying unit connected to the output end of the first receiving module, and the second querying unit is connected to the selecting unit and the device management end apparatus, or the second querying unit is connected to the selecting unit;
the judging module comprises a first judging unit for judging whether the control instruction information contained in the equipment authorization query request is contained in an authorization operation list of the equipment authorization transaction record, a second judging unit for judging that the authorization version number contained in the equipment authorization query request is equal to the current authorization version number, and a third judging unit for judging that the access time information contained in the equipment authorization query request is in the authorization validity period.
Preferably, the control end device comprises a second sending module and a second receiving module which are both connected with the block chain link point, the output end of the second receiving module is connected with the input end of a second determining module, the output end of the second determining module is connected with the input end of a third sending module, and the output end of the third sending module is connected with the equipment;
the equipment management end device comprises a fourth receiving module and a fourth sending module which are connected with the block chain link points.
Preferably, the control end device further interacts with other systems to obtain the device control request.
The invention has the following beneficial effects: in the technical scheme of the invention, the block link point determines the current authorization version number according to the equipment authorization query request sent by the control end device and the equipment identification information and the user identification information, and then determines the equipment authorization transaction record according to the current authorization version number and the equipment authorization query request information, the block link node sends the response information of the equipment authorization query request to the controller end device, and the control end device sends the control instruction information to the corresponding equipment according to the response information of the authorization query request, thereby realizing interconnection and intercommunication between cross-equipment and cross-application.
Drawings
FIG. 1 is a general block diagram of the present invention;
FIG. 2 is a block diagram of a blockchain node according to the present invention;
FIG. 3 is a block diagram of a determining module in a blockchain node according to the present invention;
FIG. 4 is a flow chart of the present invention;
FIG. 5 is a diagram illustrating the valid blocks of the device authorization transaction record according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an apparatus access device includes a blockchain network 1, where the blockchain network 1 interacts with at least two apparatus management end devices 2 and a control end device 3, respectively, and the control end device 3 is connected with an input end of an apparatus 4.
The block chain network 1 includes at least three block chain nodes 11, the number of the block chain nodes 11 is set according to actual requirements, and in the embodiment of the present invention, the number of the block chain link points 11 is set to 3. The number of the device management end devices 2 is set according to actual requirements, and in the embodiment of the invention, the number of the device management end devices 2 is set to be 2.
When the block chain node 11 interacts with the device management end apparatus 2, the block chain node 11 mainly queries the device authorization transaction record from the device management end apparatus 2; when the device management end 2 interacts with the block link point 11, the device management end 2 mainly queries the block link point 11 for the authorization version number corresponding to the user identification information and the device identification information.
When the control end device 3 interacts with the blockchain node 11, the control end device 3 is a mandatory implementation point for access control and is responsible for inquiring the corresponding device authorization information by sending a device authorization inquiry request to the blockchain node 11; the equipment authorization query request at least comprises equipment identification information, user identification information, access time information and control instruction information; the control end device 3 is also responsible for sending a control instruction to the equipment 4 corresponding to the equipment identification information; the control-end device 3 may also interact with other systems 5 to obtain device control requests, where the other systems 5 may be applications, devices, and the like. The device identification information is identification information of the device 4, and the device identification information may be any information capable of uniquely identifying the device 4, such as an MAC address, an IP address, a UUID (universally unique identifier), and the like of the device 4; the user identification information is identification information of a user who can control the device 4, where the user may be a natural person, a master device, an application or a service. When the user represents a natural person, the user identification information can be any information which can uniquely identify the user, such as a mobile phone number, a mailbox address, an identity card number and the like of the user; when the user represents a master control device, the user identification information may be any information capable of uniquely identifying the master control device, such as a MAC address, an IP address, a universally unique identifier UUID, and the like of the master control device; when the user represents an application or service, then the user identification information may be APPID of the application or service, a universally unique identifier UUID, or any other information capable of uniquely identifying the application or service.
The control end device 3 may be provided in the device 4, in another system 5, or in a mobile application that manages the device. The control end device 3 and the equipment management end device 2 may be disposed at different positions of the equipment access device, or may be coupled together.
With reference to fig. 2, the block chain node 11 includes a first receiving module 111, an input end of the first receiving module 111 is connected to an output end of the control end device 3, an output end of the first receiving module 111 is connected to an input end of the determining module 112, an output end of the determining module 112 is connected to an input end of the first query module 113, an output end of the first query module 113 is connected to an input end of the determining module 114, an output end of the determining module 114 is connected to an input end of the first sending module 115, and an output end of the first sending module 115 is connected to an input end of the control end device 3.
The first receiving module 111 is configured to receive an apparatus authorization query request sent by the control end device 3; the determining module 112 determines, according to the device identification information and the user identification information sent by the first receiving module 111, a current authorization version number corresponding to the device identification information and the user identification information; the first query module 113 determines, according to the device identification information, the user identification information, and the current authorization version number, that a device authorization transaction record corresponding to the device identification information, the user identification information, and the current authorization version number is stored; the determining module 114 is configured to determine whether information included in the device authorization query request matches the device authorization transaction record; the first sending module 115 is configured to send device authorization query response information to the control end apparatus 3.
Further, as shown in fig. 3, the determining module 112 includes a second querying unit 1121 connected to the output end of the first receiving module 111, and the second querying unit 1121 is further connected to the selecting unit 1122 and the device management end apparatus 2, or the second querying unit 1121 is connected to the selecting unit 1122. The second querying unit 1121 of the present invention queries, to the device management end apparatus 2, all historical authorization version numbers corresponding to the device identification information and the user identification information according to the device identification information and the user identification information; or the second querying unit 1121 queries, according to the device identifier information and the user identifier information, all historical authorization version numbers stored by the blockchain node 11 and corresponding to the device identifier information and the user identifier information. The selecting unit 1122 is configured to select the largest historical authorization version number from all the historical authorization version numbers queried by the second querying unit 1121 as the current authorization version number.
Further, the determining module 114 includes a first determining unit, a second determining unit and a third determining unit. The first judging unit is used for judging whether control instruction information contained in the equipment authorization query request is contained in an authorization operation list of the equipment authorization transaction record; the second judging unit is configured to judge that an authorization version number included in the device authorization query request is equal to the current authorization version number; the third judging unit is configured to judge that the access time information included in the device authorization query request is within the authorization validity period. In practical cases, the number of the determination units included in the determination module 114 is determined according to the information type included in the device authorization query request, and when the device authorization query request does not include the access time information, the determination module 114 does not include the third determination unit; when the device authorization query request does not include the control instruction, the determination module 114 does not include the first determination unit.
The control end device 3 comprises a second sending module connected with the input end of the block chain node 11 and a second receiving module connected with the output end of the block chain node 11, the output end of the second receiving module is connected with the input end of a second determining module, the output end of the second determining module is connected with the input end of a third sending module, and the output end of the third sending module is connected with the equipment 4; the second sending module is configured to send a device authorization query request to the blockchain node 11; the second receiving module is configured to receive device authorization query response information corresponding to the device authorization query request sent by the blockchain node 11; the second determining module is used for determining whether the user corresponding to the user identification information can control or operate the device 4 corresponding to the device identification information according to the device authorization query response information; and the third sending module is used for sending the control instruction information contained in the device authorization query request to the device 4 corresponding to the device identification information.
The device management end apparatus 2 includes a fourth receiving module and a fourth sending module both connected to the blockchain node 11, where the fourth receiving module 21 is configured to receive the device identification information and the current authorization version number query request corresponding to the user identification information sent by the blockchain node 11; the fourth sending module 22 is configured to send the device identification information and the current authorization version number corresponding to the user identification information to the blockchain node 11.
Referring to fig. 4, a device access control method according to the present invention includes the following steps:
step S101: the block chain node 11 receives an equipment authorization query request sent by the control end device 3;
step S102: the block chain node 11 determines a corresponding current authorization version number according to the equipment authorization query request;
step S103: the block chain node 11 determines a corresponding device authorization transaction record according to the device authorization query request and the current authorization version number;
step S104: step S103, if the equipment authorization transaction record is found, continuing to step S105, otherwise, jumping to step S106;
step S105: the block chain node 11 determines whether the device authorization query request matches the device authorization transaction record;
step S106: the block chain node 11 sends response information of the device authorization query request to the control end apparatus 3.
Step S107: the response information of the authorization query request received by the control end device 3 determines whether to send control instruction information to the corresponding device 4.
Further, the specific content of step S101 includes: the device authorization query request at least comprises device identification information, user identification information, access time information and control instruction information. The first receiving module 111 in the block chain node 11 receives the device authorization query request sent by the second sending module in the control end device 3.
Further, the specific content of step S102 includes: the determining module 112 of the blockchain node 11 determines, according to the device identification information and the user identification information in the device authorization query request, a current authorization version number corresponding to the device identification information and the user identification information. The authorized version number may be managed by the blockchain node 11, or may be managed by the device management end apparatus 2. When the authorization version number is managed by the device management end apparatus 2, the second querying unit 1121, included in the determination module 112 in the block chain node 11, sends the device identification information and the user identification information to the fourth receiving module in the device management end apparatus 2, and the fourth sending module in the device management end apparatus 2 sends all the historical authorization version numbers corresponding to the device identification information and the user identification information that are queried to the second querying unit 1121, included in the determination module 112; when the authorization version number is managed by the blockchain node 11, the second querying unit 1121 included in the determination module 112 in the blockchain node 11 queries all historical authorization version numbers, which are stored by the blockchain node 11 and correspond to the device identification information and the user identification information, according to the device identification information and the user identification information. The selecting unit 1122 in the determining module 112 selects the largest historical authorization version number from all the historical authorization version numbers queried by the second querying unit 1121 as the current authorization version number.
The authorization version number is a numeric value or a string with ascending rules, relative to the device identification information and the user identification information. For example: the authorization version number is configured as a positive integer (e.g., 1, 2, 3, etc.). The authorization version number may also be configured as a string with ascending rules, such as "1.0.0", "1.1.0", "2.3.6", etc., or a string with an authorization version number in the form of "x.y.z" (X, Y, Z is a number), with the ascending definition of string "x.y.z" being greater than string "m.n.k" being: if and only if X is greater than M, or X is equal to M and Y is greater than N, or X is equal to M and Y is equal to N and Z is greater than K.
The blockchain node 11 may store an authorization version number record table of the maximum historical authorization version number allocated corresponding to the device identification information and the user identification. The authorization version number records a table shape such as "(device identification information + the user identification) - > maximum historical authorization version number". As shown in table 1:
TABLE 1
| Device identification information | User identification information | Maximum historical authorization version number |
| “dev-10010” | “user-110030” | 3 |
| “dev-10120” | “dev-011030” | 20 |
The block chain node 11 queries an authorization version number recording table according to the device identification information and the user identification to obtain the allocated maximum historical authorization version number corresponding to the device identification information and the user identification.
Further, the specific content of step S103 includes: the first query module 113 in the blockchain node 11 determines a corresponding device authorization transaction record according to the device identification information, the user identification information, and the current authorization version number.
The device authorization transaction record contains device identification information, user identification information, an authorization version number, an authorization validity period and device authorization information, and the device authorization information includes authorization operation or an authorization operation list of the device 4 corresponding to the device identification information. The structure of the valid blocks in the blockchain network 1 containing device authorization transaction records is shown in fig. 5, and the valid blocks contain device authorization transaction records.
Further, the specific content of step S105 includes: the determining module 114 in the blockchain node 11 determines whether the information included in the device authorization query request matches the device authorization transaction record. The first determining unit of the determining module 114 determines whether the control instruction information included in the device authorization query request is included in the authorization operation list of the device authorization transaction record, for example, the device 4 corresponding to the device identification information is an air conditioner, the control instruction information included in the device authorization query request includes a "cooling" instruction, and the authorization operation list included in the device authorization transaction record corresponding to the user identification information and the current authorization version number is: { "cool", "heat", "raise temperature", "lower temperature" }, the control instruction information included in the device authorization query request is considered to be included in the authorization operation list of the device authorization transaction record.
A second determining unit of the determining module 114 determines whether an authorization version number included in the device authorization query request is equal to an authorization version number in an authorization list of the device authorization transaction record; the third judging unit of the judging module 114 judges whether the access time information included in the device authorization query request is within the authorization validity period in the authorization list of the device authorization transaction record.
And if the device authorization query request passes all the verification conditions, the device authorization query request is considered to be legal. The number of the determination units of the determination module 114 is determined according to the actual content type contained in the device authorization query request, and the more the number of the determination units of the determination module 114 is, the higher the accuracy rate of determining whether the device authorization query request is matched with the device authorization transaction record is. The device authorization query request is considered to be legitimate only if all the determination units in the determination module 114 determine that the device authorization query request is legitimate. The embodiment of the invention only comprises a first judging unit, a second judging unit and a third judging unit.
Further, the specific content of step S106 includes: the first sending module 115 in the blockchain node 11 sends response information of the device authorization query request to the second receiving module of the control-end apparatus 3.
The response information of the device authorization query request includes the device identification information, the user identification information, the access time information, the control instruction information, and verification result indication information. The authentication result indicating information may be set to "success" or "failure", and then "success" indicates that the device authorization query request is legitimate, and "failure" indicates that the device authorization query request is illegitimate.
Further, the specific content of step S107 includes: when the second determining module of the control end device 3 determines whether the user corresponding to the user identification information can control or operate the device 4 corresponding to the device identification information according to the response information of the device authorization query request; if the device authorization query request is legal, a third sending module of the control end apparatus 3 sends control instruction information included in the device authorization query request to a device 4 corresponding to the device identification information; if the device authorization query request is not legitimate, the operation ends.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A device access control method characterized by: the method comprises the following steps:
the method comprises the following steps: a block chain node (11) in a block chain network (1) receives an equipment authorization query request sent by a control end device (3);
step two: the block chain node (11) determines a corresponding current authorization version number according to the equipment authorization query request;
step three: the block chain node (11) determines a corresponding equipment authorization transaction record according to the equipment authorization query request and the current authorization version number;
step four: if the equipment authorization transaction record is found in the third step, performing the fifth step, otherwise, skipping to the sixth step;
step five: the block chain node (11) judges whether the equipment authorization query request is matched with the equipment authorization transaction record;
step six: the block chain node (11) sends response information of the equipment authorization query request to the control end device (3);
step seven: the control end device (3) judges whether to send control instruction information to the corresponding equipment (4) according to the received response information of the authorization query request;
the device authorization query request in the first step comprises device identification information, user identification information, access time information and control instruction information.
2. A device access control method according to claim 1, characterized by: the block chain node (11) in the second step sends the equipment identification information and all historical authorization version numbers corresponding to the user identification information query to the equipment management terminal device (2); or the block chain node (11) queries all historical authorization version numbers, corresponding to the equipment identification information and the user identification information, stored by the block chain node (11) according to the equipment identification information and the user identification information.
3. A device access control method according to claim 1, characterized by: the equipment authorization transaction record in the third step comprises equipment identification information, user identification information, an authorization version number, an authorization validity period and equipment authorization information; the device authorization information comprises an authorization operation or an authorization operation list of the device (4) corresponding to the device identification information.
4. A device access control method according to claim 3, characterized by: the authorization version number is a numeric value or a string with ascending rules.
5. A device access control method according to claim 1, characterized by: the response information in the sixth step includes device identification information, user identification information, access time information, control instruction information, and verification result identification information.
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| CN109375944B (en) * | 2018-08-28 | 2021-10-01 | 浪潮金融信息技术有限公司 | Terminal software distribution verification method based on block chain data structure |
| CN109308188B (en) * | 2018-09-25 | 2021-06-22 | 四川长虹电器股份有限公司 | Version control method and system based on block chain |
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| CN109447645B (en) * | 2018-11-09 | 2020-06-26 | 四川虹微技术有限公司 | Equipment linkage method, block chain network and storage medium |
| CN110099068B (en) * | 2019-05-16 | 2021-06-22 | 通链(北京)科技有限公司 | Method, device and equipment for interaction between open platforms based on block chains |
| CN110661685B (en) * | 2019-08-22 | 2022-08-09 | 深圳绿米联创科技有限公司 | Information feedback method and device, electronic equipment and storage medium |
| CN110601844B (en) * | 2019-08-22 | 2022-08-26 | 浙江连湖科技有限责任公司 | System and method for guaranteeing safety and authentication of Internet of things equipment by using block chain technology |
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